src/serverlist.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include <iostream>
  21 #include <sstream>
  22 #include <algorithm>
  23
  24 #include "main.h" // for g_settings
  25 #include "settings.h"
  26 #include "serverlist.h"
  27 #include "filesys.h"
  28 #include "porting.h"
  29 #include "log.h"
  30 #include "json/json.h"
  31 #include "convert_json.h"
  32 #if USE_CURL
  33 #include <curl/curl.h>
  34 #endif
  35
  36 namespace ServerList
  37 {
  38 std::string getFilePath()
  39 {
  40         std::string serverlist_file = g_settings->get("serverlist_file");
  41
  42         std::string dir_path = std::string("client") + DIR_DELIM
  43                 + "serverlist" + DIR_DELIM;
  44         fs::CreateDir(porting::path_user + DIR_DELIM + "client");
  45         fs::CreateDir(porting::path_user + DIR_DELIM + dir_path);
  46         std::string rel_path = dir_path + serverlist_file;
  47         std::string path = porting::path_user + DIR_DELIM + rel_path;
  48         return path;
  49 }
  50
  51 std::vector<ServerListSpec> getLocal()
  52 {
  53         std::string path = ServerList::getFilePath();
  54         std::string liststring;
  55         if(fs::PathExists(path))
  56         {
  57                 std::ifstream istream(path.c_str());
  58                 if(istream.is_open())
  59                 {
  60                         std::ostringstream ostream;
  61                         ostream << istream.rdbuf();
  62                         liststring = ostream.str();
  63                         istream.close();
  64                 }
  65         }
  66
  67         return ServerList::deSerialize(liststring);
  68 }
  69
  70
  71 #if USE_CURL
  72 std::vector<ServerListSpec> getOnline()
  73 {
  74         Json::Value root = fetchJsonValue((g_settings->get("serverlist_url")+"/list").c_str(),0);
  75
  76         std::vector<ServerListSpec> serverlist;
  77
  78         if (root.isArray()) {
  79                 for (unsigned int i = 0; i < root.size(); i++)
  80                 {
  81                         if (root[i].isObject()) {
  82                                 serverlist.push_back(root[i]);
  83                         }
  84                 }
  85         }
  86
  87         return serverlist;
  88 }
  89
  90 #endif
  91
  92 /*
  93         Delete a server fromt he local favorites list
  94 */
  95 bool deleteEntry (ServerListSpec server)
  96 {
  97         std::vector<ServerListSpec> serverlist = ServerList::getLocal();
  98         for(unsigned i = 0; i < serverlist.size(); i++)
  99         {
 100                 if  (serverlist[i]["address"] == server["address"]
 101                 &&   serverlist[i]["port"]    == server["port"])
 102                 {
 103                         serverlist.erase(serverlist.begin() + i);
 104                 }
 105         }
 106
 107         std::string path = ServerList::getFilePath();
 108         std::ostringstream ss(std::ios_base::binary);
 109         ss << ServerList::serialize(serverlist);
 110         if (!fs::safeWriteToFile(path, ss.str()))
 111                 return false;
 112         return true;
 113 }
 114
 115 /*
 116         Insert a server to the local favorites list
 117 */
 118 bool insert (ServerListSpec server)
 119 {
 120         // Remove duplicates
 121         ServerList::deleteEntry(server);
 122
 123         std::vector<ServerListSpec> serverlist = ServerList::getLocal();
 124
 125         // Insert new server at the top of the list
 126         serverlist.insert(serverlist.begin(), server);
 127
 128         std::string path = ServerList::getFilePath();
 129         std::ostringstream ss(std::ios_base::binary);
 130         ss << ServerList::serialize(serverlist);
 131         fs::safeWriteToFile(path, ss.str());
 132
 133         return false;
 134 }
 135
 136 std::vector<ServerListSpec> deSerialize(std::string liststring)
 137 {
 138         std::vector<ServerListSpec> serverlist;
 139         std::istringstream stream(liststring);
 140         std::string line, tmp;
 141         while (std::getline(stream, line))
 142         {
 143                 std::transform(line.begin(), line.end(),line.begin(), ::toupper);
 144                 if (line == "[SERVER]")
 145                 {
 146                         ServerListSpec thisserver;
 147                         std::getline(stream, tmp);
 148                         thisserver["name"] = tmp;
 149                         std::getline(stream, tmp);
 150                         thisserver["address"] = tmp;
 151                         std::getline(stream, tmp);
 152                         thisserver["port"] = tmp;
 153                         std::getline(stream, tmp);
 154                         thisserver["description"] = tmp;
 155                         serverlist.push_back(thisserver);
 156                 }
 157         }
 158         return serverlist;
 159 }
 160
 161 std::string serialize(std::vector<ServerListSpec> serverlist)
 162 {
 163         std::string liststring;
 164         for(std::vector<ServerListSpec>::iterator i = serverlist.begin(); i != serverlist.end(); i++)
 165         {
 166                 liststring += "[server]\n";
 167                 liststring += (*i)["name"].asString() + "\n";
 168                 liststring += (*i)["address"].asString() + "\n";
 169                 liststring += (*i)["port"].asString() + "\n";
 170                 liststring += (*i)["description"].asString() + "\n";
 171                 liststring += "\n";
 172         }
 173         return liststring;
 174 }
 175
 176 std::string serializeJson(std::vector<ServerListSpec> serverlist)
 177 {
 178         Json::Value root;
 179         Json::Value list(Json::arrayValue);
 180         for(std::vector<ServerListSpec>::iterator i = serverlist.begin(); i != serverlist.end(); i++)
 181         {
 182                 list.append(*i);
 183         }
 184         root["list"] = list;
 185         Json::StyledWriter writer;
 186         return writer.write( root );
 187 }
 188
 189
 190 #if USE_CURL
 191 static size_t ServerAnnounceCallback(void *contents, size_t size, size_t nmemb, void *userp)
 192 {
 193     //((std::string*)userp)->append((char*)contents, size * nmemb);
 194     return size * nmemb;
 195 }
 196 void sendAnnounce(std::string action, u16 clients, double uptime, std::string gameid, std::vector<ModSpec> m_mods) {
 197         Json::Value server;
 198         if (action.size())
 199                 server["action"]        = action;
 200         server["port"] = g_settings->get("port");
 201         server["address"]       = g_settings->get("server_address");
 202         if (action != "delete") {
 203                 server["name"]          = g_settings->get("server_name");
 204                 server["description"]   = g_settings->get("server_description");
 205                 server["version"]       = VERSION_STRING;
 206                 server["url"]           = g_settings->get("server_url");
 207                 server["creative"]      = g_settings->get("creative_mode");
 208                 server["damage"]        = g_settings->get("enable_damage");
 209                 server["password"]      = g_settings->getBool("disallow_empty_password");
 210                 server["pvp"]           = g_settings->getBool("enable_pvp");
 211                 server["clients"]       = clients;
 212                 server["clients_max"]   = g_settings->get("max_users");
 213                 if (uptime >=1) server["uptime"] = (int)uptime;
 214                 if (gameid!="") server["gameid"] = gameid;
 215         }
 216
 217         if(server["action"] == "start") {
 218                 server["dedicated"]     = g_settings->get("server_dedicated");
 219                 server["rollback"]      = g_settings->getBool("enable_rollback_recording");
 220                 server["liquid_finite"] = g_settings->getBool("liquid_finite");
 221                 server["mapgen"]        = g_settings->get("mg_name");
 222                 server["mods"] = Json::Value(Json::arrayValue);
 223                 for(std::vector<ModSpec>::iterator m = m_mods.begin(); m != m_mods.end(); m++) {
 224                         server["mods"].append(m->name);
 225                 }
 226                 actionstream << "announcing to " << g_settings->get("serverlist_url") << std::endl;
 227         }
 228
 229         Json::StyledWriter writer;
 230         CURL *curl;
 231         curl = curl_easy_init();
 232         if (curl)
 233         {
 234                 CURLcode res;
 235                 curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
 236                 curl_easy_setopt(curl, CURLOPT_URL, (g_settings->get("serverlist_url")+std::string("/announce?json=")+curl_easy_escape(curl, writer.write( server ).c_str(), 0)).c_str());
 237                 //curl_easy_setopt(curl, CURLOPT_USERAGENT, "minetest");
 238                 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, ServerList::ServerAnnounceCallback);
 239                 //curl_easy_setopt(curl, CURLOPT_WRITEDATA, &liststring);
 240                 curl_easy_setopt(curl, CURLOPT_TIMEOUT, 1);
 241                 curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 1);
 242                 res = curl_easy_perform(curl);
 243                 if (res != CURLE_OK)
 244                         errorstream<<"Serverlist at url "<<g_settings->get("serverlist_url")<<" error ("<<curl_easy_strerror(res)<<")"<<std::endl;
 245                 curl_easy_cleanup(curl);
 246         }
 247
 248 }
 249 #endif
 250
 251 } //namespace ServerList